Home / 430,487.22-645,729.75-205,164.66

Finding the Fourth Proportional to 430,487.22, 645,729.75 and 205,164.66

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Solution

The fourth proportional to 430,487.22, 645,729.75 and 205,164.66 is: 307,746.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,487.22 : 645,729.75 = 205,164.66 : x
  2. Step 2: Convert to fraction form
    430,487.22/645,729.75 = 205,164.66/x
  3. Step 3: Cross multiply
    430,487.22x = 645,729.75 × 205,164.66
  4. Step 4: Simplify right side
    430,487.22x = 132,480,924,610.64
  5. Step 5: Solve for x
    x = 132,480,924,610.64/430,487.22
  6. Step 6: Final answer
    x = 307,746.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.